Monkey wrench



Dec.- 28 1926. 1,612,659

G. SPANGLER MONKEY WRENCH Filed Jan. 22, 2

Patented Dec. 28, 1926.

PATENT OFFICE.

GEORGE SPANGLER, OF LEIPSIC, OHIO.

MONKEY WRENCH.

Application filed January This invention aims to provide a wrench having a quick-acting jaw, the construction. being such that, after the jaw has been brought up against the work, the jaw can tilt and grip the shank of the wrench, thereby taking much or all of the strain of? the latch mechanism which holds the movable jaw in any position to which it may have been adjusted.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that son to which the invention appertains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure 1 shows in side elevation wrench constructed in accordance with the invention; Fig. 2 is an elevation wherein the wrench is viewed at right angles to the showing of Fig. 1; Fig. 3 is a tragmental longitudinal section wherein parts are bro en away; and Fig. 4 is a cross section on the line 14 of Fig. 3.

The wrench forming the subject-matter 5 this application comprises a handle 1 including a grip 2 having a longitudinal passage 3 receiving the reduced end 4 of a shank 5 having a shouider 6 which engages the inner end of the grip 2, the shank 5 carrying fixed jaw 7, securing elements 8 uniting the grip 2 with the end 4E 01" the shank 5, the cross sectional area of the end 4; ot the shank 5 being such that it fills the passage 3 but partially.

A rider 9 is mounted for right-line reciprocation on the shank 5 and is supplied with a rack 10 in slidable contact with the mem bers 1 and 5, the rack being adapted to en tend backwarclly into the unencumbered portion of the passage 3. A latch 11 is located between the ears 12 on the grip 2 and is mounted on a pivot element 14 carried by the ears, the latch being adapted to 22, 1925. Serial No. 4,037.

cooperate at one end with the rack 10, the compression spring 25 being interposed between the grip 2 and the other end of the latch 11 to hold the latch normally engaged with the rack 10.

The rider 9 has a recess 15into which extends a tongue 16 on a movable jaw 17 hav ing an opening 18 for the passage of the shank 5, the tongue 16 being supplied With an opening 19 receiving a pivot element 20 iii) carried by the rider 9 and extended across the recess 15.

In practical operation, when the latch 11 is disengaged. "from the rack 10, the jaw 17 should beshii'ted quickly into any desired or ion, so as to cooperate with the fixed i 17 engaging an object, as indicated in i i Note that the opening 19 in the tongue 16 oi the movable jaw 17 is considerably larger than the cross section of the pivot element 20, and observe that the opening 18 of the movable jaw 17 is oi greater cross section than the cross sectional area of the shank 5, as indi ated in Fig. 3. The result is that after the jaw 17 has been brought up against the work, the can tilt a little, gripping the shank 5 at diagonally opposite points in dicated by the numeral 21, a large amount oi. strain thus being taken off the latch 11.

Having thus described the invention, what is claimed is A wrench comprising a shank having a iixed jaw, a rider mounted to slide on the shank, latch mechanism cooperating with the shank and the rider to hold the rider in adjusted positions longitudinally of the shank, and a movable aw cooperating with the fixed jaw and having an opening receiving the shank, the movable jaw being loosely pivoted to the rider, and the opening in the movable aw being large enough so that the movable jaw can tilt with respect to the rider when engaged with the work, thereby causing the movable aw to grip the shank at diagonally opposite points and relieve the strain on the latch mechanism.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature.

GEORGE SPANGLER. 

